Ruja may refer to: Ruja, an Estonian rock band Ruja (EP), an EP by Ruja Ruja (album), an LP by Ruja Ruja, Lower Silesian Voivodeship, a village in Lower Silesian Voivodeship, south-western Poland Ruja, a village in Agnita town, Sibiu County, Romania Ruja (Siret), a tributary of the Siret in Iași County, Romania Ruja (Tazlăul Sărat), a tributary of the Tazlăul Sărat in Bacău County, Romania Rūja, river in Latvia Ruja Ignatova (born 1980), Bulgarian-German convicted fraudster